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vishnevite

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Journal Article
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1261-1277.
... cancrinite and vishnevite with the principal substitutions being by and Ca for Na. In the present study, several intermediate members of the cancrinite–vishnevite series from a syenitic intrusion at Cinder Lake (Manitoba, Canada), were used to examine how chemical variations in this series affect...
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Published: 01 January 2013
EISBN: 9780903056434
... Hexagonal (–) The structures of the cancrinite–vishnevite minerals are characterized by six-membered rings of alternating A1O 4 and SiO 4 tetrahedra, linked laterally and above one another to form a three-dimensional framework with composition SiAlO 4 . The stacking sequence...
FIGURES
Journal Article
Published: 01 May 2007
American Mineralogist (2007) 92 (5-6): 713-721.
...Giancarlo Della Ventura; Fabio Bellatreccia; Gian Carlo Parodi; Fernando Cámara; Massimo Piccinini Abstract This paper reports a single-crystal FTIR spectroscopic study of vishnevite, ideally [Na 6 (SO 4 )] [Na 2 (H 2 O) 2 ](Si 6 Al 6 O 24 ), a member of the cancrinite group of feldspathoids...
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Journal Article
Published: 01 May 1984
The Canadian Mineralogist (1984) 22 (2): 333-340.
...Ishmael Hassan; H. Douglas Grundy Abstract Crystal structure of vishnevite using X-ray-diffraction data. The final conventional residue R is 3.7% using space group P6 3 . The structure shows great similarity to that of the carbonate-rich end member of the solid-solution series, however, owing...
Journal Article
Published: 01 October 2011
The Canadian Mineralogist (2011) 49 (5): 1151-1164.
...-framework components. We provide IR spectra for typical samples of cancrinite, cancrisilite, kyanoxalite, hydroxycancrinite, depmeierite, vishnevite, pitiglianoite, balliranoite, davyne and quadridavyne, as well as the most unusual varieties of cancrinite-subgroup minerals (Ca-deficient cancrinite, H 2 O...
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Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 657-668.
... of the SO 4 tetrahedra within the cage. The two “cancrinite” cages share a common base and contain a segment of the …Na–H 2 O…Na–H 2 O…. chain, which is a characteristic feature of the cancrinite, vishnevite, and pitiglianoite structures. The “sodalite” cages host one sulfate group that is always disordered...
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Journal Article
Published: 01 December 1991
American Mineralogist (1991) 76 (11-12): 2003-2008.
... with Mo Kα radiation on a four-circle automatic diffractometer. Pitiglianoite belongs to the cancrinite and vishnevite group of minerals, with a three-dimensional framework of alternating [SiO 4 ] and [AlO 4 ] tetrahedra with alkali cations, H 2 O molecules, and sulphate groups in the channels...
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Distribution of selected elements in cancrinite–<b>vishnevite</b> series from Cind...
Published: 01 October 2017
Fig. 4. Distribution of selected elements in cancrinite–vishnevite series from Cinder Lake as a function of ( a ) Na and ( b ) (Ca + Sr) content. Linear correlations and correlation coefficients are shown for and . All values are per formula unit (pfu).
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Distribution of selected elements in cancrinite–<b>vishnevite</b> series from Cind...
Published: 01 October 2017
Fig. 4. Distribution of selected elements in cancrinite–vishnevite series from Cinder Lake as a function of ( a ) Na and ( b ) (Ca + Sr) content. Linear correlations and correlation coefficients are shown for and . All values are per formula unit (pfu).
Image
Distribution of selected elements in cancrinite–<b>vishnevite</b> series from Cind...
Published: 01 October 2017
Fig. 4. Distribution of selected elements in cancrinite–vishnevite series from Cinder Lake as a function of ( a ) Na and ( b ) (Ca + Sr) content. Linear correlations and correlation coefficients are shown for and . All values are per formula unit (pfu).
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Variation in unit-cell parameters across the cancrinite–<b>vishnevite</b> series (...
Published: 01 October 2017
Fig. 6. Variation in unit-cell parameters across the cancrinite–vishnevite series (this work and data from the literature).
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( top ) optical micrograph of the <b>vishnevite</b> crystal studied. Note that the...
Published: 01 January 2014
Figure 16 ( top ) optical micrograph of the vishnevite crystal studied. Note that the specimen is not a polished section, but a prismatic euhedral hexagonal single crystal manually extracted from the rock; the terminal pinacoid of the crystal is on the left side of the picture. ( middle
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IR spectra of SO 4 -bearing cancrinite-group minerals: <b>vishnevite</b>, K-poor v...
Published: 01 October 2011
Fig. 4 IR spectra of SO 4 -bearing cancrinite-group minerals: vishnevite, K-poor variety from Mount Alluaiv, Lovozero massif, Kola Peninsula, Russia (a), vishnevite, K-rich variety from Murun massif, Siberia, Russia, (b), and pitiglianoite from Monte Cavalluccio, Sacrofano volcanic complex
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IR spectra of SO 4 -bearing cancrinite-group minerals: <b>vishnevite</b>, K-poor v...
Published: 01 October 2011
Fig. 4 IR spectra of SO 4 -bearing cancrinite-group minerals: vishnevite, K-poor variety from Mount Alluaiv, Lovozero massif, Kola Peninsula, Russia (a), vishnevite, K-rich variety from Murun massif, Siberia, Russia, (b), and pitiglianoite from Monte Cavalluccio, Sacrofano volcanic complex
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IR spectra of SO 4 -bearing cancrinite-group minerals: <b>vishnevite</b>, K-poor v...
Published: 01 October 2011
Fig. 4 IR spectra of SO 4 -bearing cancrinite-group minerals: vishnevite, K-poor variety from Mount Alluaiv, Lovozero massif, Kola Peninsula, Russia (a), vishnevite, K-rich variety from Murun massif, Siberia, Russia, (b), and pitiglianoite from Monte Cavalluccio, Sacrofano volcanic complex
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Single-crystal unpolarized-light spectrum of <b>vishnevite</b> Vish&#x2F;4 from Vishnev...
Published: 01 May 2007
F igure 1. Single-crystal unpolarized-light spectrum of vishnevite Vish/4 from Vishnevy Gory, Urals. Spectrum collected on a randomly oriented very thin crystal fragment. The inset shows the 4500–7500 cm −1 NIR region collected on a thicker fragment.
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Single-crystal unpolarized-light spectrum of <b>vishnevite</b> V72 from Scotland i...
Published: 01 May 2007
F igure 3. Single-crystal unpolarized-light spectrum of vishnevite V72 from Scotland in the MIR range.
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Polarized-light FTIR spectra of <b>vishnevite</b> Pi4 from Pitigliano, doubly poli...
Published: 01 May 2007
F igure 6. Polarized-light FTIR spectra of vishnevite Pi4 from Pitigliano, doubly polished section // c , thickness 150 μm.
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Polarized-light FTIR spectra of <b>vishnevite</b> Pi4 from Pitigliano, doubly poli...
Published: 01 May 2007
F igure 7. Polarized-light FTIR spectra of vishnevite Pi4 from Pitigliano, doubly polished section // c , thickness 40 μm.
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Unpolarized-light single-crystal FTIR spectra of <b>vishnevites</b> in the 2600–13...
Published: 01 May 2007
F igure 2. Unpolarized-light single-crystal FTIR spectra of vishnevites in the 2600–1300 cm −1 region for ( a ) vishnevites from Vishnevy Gory and Scotland and ( b ) vishnevites from Latium, Italy. For sample labels see Table 1 . Absorbance normalized to thickness ( a = A/t, in cm −1